[Subjective effects of electromyographic feedback training in patients with chronic anxiety].
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Biomedical subjects
Publications and source records attributed to L Annable.
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In a double-blind, controlled clinical study, lasting 8 weeks, 55 hospitalized schizophrenic patients were randomly assigned to one of the five drug treatments: 600 mg chlorpromazine/day, 300 mg chlorpromazine/day, 300 mg chlorpromazine--250 mg alpha-methyldopa/day, 300 mg chlorpromazine--500 mg alpha-methyldopa/day, 300 mg chlorpromazine--750 mg alpha-methyldopa/day. The results showed that all five treatments were significantly effective in treating schizophrenic behavior. The dose-response relationship for the different doses of alpha-methyldopa in combination with chlorpromazine, suggested an optimal response to 300 mg chlorpromazine--500 mg alpha-methyldopa.
The authors compared penfluridol, a long-acting neuroleptic that can be administered orally once a week, with chlorpromazine in the treatment of 33 newly admitted schizophrenic patients in a brief therapy unit. Patients receiving either drug improved enough to be discharged in 3 weeks. Penfluridol-treated patients experienced less drowsiness than those treated with chlorpromazine, but the severity of extrapyramidal symptoms appeared to be greater with penfluridol.
In a double-blind placebo, controlled clinical study, lasting 12 weeks, 48 male and 48 female ambulatory schizophrenic patients were randomly assigned to one of four treatments: placebo; amitriptyline hydrochloride, 125 mg/day; perphenazine, 20 mg/day; or amitriptyline-perphenazine, 20 mg/day. Treatment groups contained an equal number of male and female patients. Perphenazine alone or in combination was substantially more effective in reducing psychopathological disorder than was the placebo, but there was no evidence to indicate the superiority of the amitriptyline-perphenazine combination over perphenazine alone. Amitriptyline alone was not substantially better than placebo and could not be considered an efficacious medication for the maintenance treatment of these patients. Less response to treatment was made by patients with longer-term records of prior hospitalization.
Twenty-four volunteer college students who were regular drug users were randomly allocated to three training groups of equal size: alpha feedback, EMG feedback and a joked control group. The subjects were unaware of which feedback condition they received and were asked to practise at home during a six-month follow-up period in order to achieve a relaxed state similar to that experienced during training. No group was successful in retaining gains made in their alpha levels during each session, but the EMG group significantly reduced their muscular activity during training and retained the improvement during follow-up. The alpha and joked groups did not greatly improve their EMG during training but at follow-up achieved the same levels as the EMG group. There was evidence to suggest that a reduction in drug use among light and medium users was maintained during follow-up. Significant and lasting improvements were made by each group in the duration and quality of their sleep and anxiety levels were reduced.
The aim of our clinical investigation was to evaluate the electrocardiographic abnormalities in patients receiving only chlorpromazine, and to assess the role of sex, age and length of illness in these abnormalities. 96 schizophrenic patients (48 male and 48 female patients) satisfying study criteria were selected for inclusion and changed from their old medication to a fixed dose of 125 mg chlorpromazine daily. This uniformization period lasted two weeks, during which the electrocardiograms were taken after an overnight fast. Five patients were excluded because their electrocardiographic changes revealed the possibility of an organic heart disease. The electrocardiograms were found to be normal for 65.9% of the patients and abnormal for 34.1%. 11% of patients were classified as demonstrating Grade I repolarization abnormalities, 14.3% of patients as Grade II, and 8.8% as Grade III. Chi square (X2) tests revealed no significant differences between sexes, age groups or lenghts of illness as regards ECG normality and grade of abnormality.
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A collaborative study of the second international Reference Preparation of Erythropoietin, Human, Urinary, for Bioassay was carried out in 10 laboratories. Combined potency estimates obtained by comparison with the International Reference Preparation, indicate that ampoules of the second Preparation contain 10.0 IU (weighted mean potency) or, taking the unweighted mean potency, 9.8 IU, with fiducial limits (P=0.95) of 8.4-11.5 IU. The second Preparation could be used as a standard in estimating the potency of a preparation of sheep plasma erythropoietin (68/307) although, as with the International Reference Preparation, there was a tendency for the sheep plasma preparation to produce log-dose-log-response regression lines that were steeper than those produced by the second Preparation.In accelerated degradation studies of the second Preparation stored as the dry product in ampoules for up to 1 year, there was no consistent trend to indicate instability of the preparation.Following its establishment in 1971, the Second International Reference Preparation was allocated a potency of 10 IU/ampoule.
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Penfluridol, a long-acting neuroleptic that can be administered orally once a week, was compared with chlorpromazine in the maintenance treatment of 29 schizophrenic patients newly discharged from a brief therapy unit. The results indicate that penfluridol was of a similar efficacy to chlorpromazine in the treatment of these patients. Penfluridol-treated patients experienced less drowsiness but more extrapyramidal symptoms than those treated with chlorpromazine.
In a double-blind controlled study lasting 9 months, pipothiazine palmitate, a long-acting neuroleptic that can be administered intramuscularly once a month, was compared with fluphenazine enanthate in the maintenance treatment of 32 schizophrenic outpatients. Before the trial commenced, all patients were being treated with fluphenazine enanthate. The results indicate that pipothiazine palmitate was not as potent a neuroleptic as fluphenazine enanthate. Pipothiazine appears to resemble fluphenazine enanthate in its capacity to induce parkinsonism and tardive dyskinesia.
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